Payment Integration

This covers five payment providers with different strengths: SePay for Vietnamese VietQR and bank transfers, Polar for SaaS subscriptions with automated GitHub/Discord benefits, Stripe for enterprise checkout flows, Paddle for merchant-of-record subscriptions with built-in tax compliance, and Creem.io for licensing with device activation. You get webhook verification scripts, multi-provider order management patterns, and platform-specific guides for checkouts, subscriptions, and API integration. Honest take: the breadth is useful if you're comparing providers or need regional coverage, but you'll mostly use one or two of these at a time. The multi-provider order management doc is the real value if you're actually running multiple gateways.

skills.sh installs: 356
GitHub stars: 2.2K
last updated: Aug 21, 2026

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Install

$ npx -y skills add mrgoonie/claudekit-skills --skill payment-integration --agent claude-code

Installs into .claude/skills of the current project.

Files

Payment Integration

Production-proven payment processing with SePay (Vietnamese banks), Polar (global SaaS), Stripe (global infrastructure), Paddle (MoR subscriptions), and Creem.io (MoR + licensing).

When to Use

Payment gateway integration (checkout, processing)
Subscription management (trials, upgrades, billing)
Webhook handling (notifications, idempotency)
QR code payments (VietQR, NAPAS)
Software licensing (device activation)
Multi-provider order management
Revenue splits and commissions

Platform Selection

Platform	Best For
SePay	Vietnamese market, VND, bank transfers, VietQR
Polar	Global SaaS, subscriptions, automated benefits (GitHub/Discord)
Stripe	Enterprise payments, Connect platforms, custom checkout
Paddle	MoR subscriptions, global tax compliance, churn prevention
Creem.io	MoR + licensing, revenue splits, no-code checkout